Garlic enjoys a cool climate. The suitable temperature for the growth of aboveground stems and leaves is 12- 16℃, and the optimum seedling age for overwintering is 4-6 leaves. It takes 40-50 days from sowing to growing into 4-6 leaves. If the average daily temperature is below 7℃, the growth will stop.
The weather is cool at this time in September, which is suitable for the emergence and growth of garlic seedlings. Garlic planting time is very important. If it is sown too early, garlic seedlings will grow too vigorously before overwintering, which will consume health and reduce overwintering ability.
Therefore, sowing in the Yangtze River valley around mid-September can make plants grow to 5-6 leaves before overwintering. At this time, plants have the strongest cold resistance, so they will not freeze to death in the cold winter, which can lay a good foundation for plants to pass vernalization smoothly.
However, if garlic is sown too late, it will have weak roots, small seedlings and low cold resistance, resulting in more deaths during the winter. Therefore, garlic must strictly control the sowing date.
garlic
Garlic is the underground bulb of Liliaceae and Allium. The whole plant of garlic has a strong pungent garlic odor. Garlic head, garlic leaves (green garlic or garlic seedlings) and flower stems (garlic stems) can all be used as vegetables, not only as seasoning, but also as medicine. It is a famous dual-purpose plant for food and medicine.
Refer to Baidu Encyclopedia-Garlic above.